Improvement in paper-bag machinery



JOSEPH WELLS,

' UNITED STATES N PATENT OFFICE OFBROOKLYN, YORK, ,ASSIGNOR' TO ORLANDOA. l y

WILCOX, OFSAME PLAGE.

IMPROYEMENTAIN PAPEReBAG- MACHINER.

Specijcaton forming part of Letters Patent No. 87,608, dated March 9,1869.

To all whom 'it may concern Be it' known that Y I, JOSEPH WELLS, `ofBrooklyn, county of Kings and State of New York, have inventedya new anduseful Improvement in Machines `for Making `Paper Bags. Y

Said invention and improvement relates, first, to regulatingautomatically the tension or strain onthe paper asit is drawn into themachine; second, to mechanism for feeding or drawing the paperinthefmachine; and,

. third, to mechanism for pasting the bottom seam or lap of the bag; andI do hereby declare that thefollowin g is afu'll, clear,a`nd exact:description of the construction and operation the upper feed-shaft Vwith the collars 4X X XII XII/ In the manufacture of paper bags bymachinery froma continuous roll of paper, it is necessary that the`'paper bedrawnfstraight and trueinto'the machine and prevented fromrunning olf to eitherside. This resultis attainedb y applying frictionor resistance to the" Spindle carrying the rollof paper, thereby causinga strainer tension upon the paper be-l tween the drawing mechanism andthe Toll,

Saidf tension causing the paper to run true in the machine.

, When a roll of paper' is placed in its proper position inthe machine,and a given amount of friction applied to the `spindle carryingl it, itis obviousthat, as the paperV is ruled of, the

` tension upon the-paper thus drawn from the roll increases as theleverage of the paper drawn from the roll upon the said roll decreasesand the said roll is reduced in size.` This varyingand increasingtension requlres the almost constant attention of -theoperator toregulate and keep the said tension as nearly spindle D in such a mannerthat when unroll uniform as possible.

By my improvement thel said tension is rendered self-regulating orautomatic, which I will proceed to explain.

Projecting from the back end of. the frame of the `machine Aare two armsB C, supporting a spindle, D,which carries the roll of paper.

Near the outward end of the arm B there is located a friction-gland, o2,with its hubpassn y ing through and working in the said arm.

Said gland o2 has a square mortise, s, passing through it to receive theend of the spindle D, squared to lit into said mortise s.

The arm B is also provided with a lever, F, to which it is jointed atthe back end, th'e other end of Said lever F passing through themortiseD and terminating in the shoulder H.

Inside of thelever F is a follower, M, resting against thefriction-gland o2, and held in its position, by the set-screw G, saidset-screw also Serving to force said follower Magainst thefriction-gland o2, thereby producing the required amount of friction andresistance to the spindle D. l The follower is prevented from turningwhen acted upon by the friction-gland o2 by the lip R resting'againstthe arm B.

One end ofthe spindle D is threaded, as-is also the iange E, whichscrews upon it. The flange E is also made adjustable upon said `spindleby a set-screw'placed in its hub.

saidplane working against the shoulder H. To

the `other end of the shaft V is attached a lever, J, by which motion iscommunicated to the cam I.

There is attached to the end of the lever J .la cog-wheel, K, whichpresses upon the under side ofthe roll of paper.

The object of using'a cogged instead of a plain-faced wheel is toprevent the paper from gathering before it, the spaces between the cogsServin g to release any slack that may gather before the wheel K.

The oflce of the springV P is to keep said wheel K-pressed against theroll of paper,

thereby raising the lever J. as the roll of paper is being reduced insize.

If, now, a roll of paper be placed upon the ing it will turn in thedirection indicated by the arrow on the flange E, and firmly securedbetween the flanges E E', the cog-wheel K resting against its underside, and the end of the paper composin said roll connected with thedrawing mechanism of the machine,'the requisite degree of tension may begiven to the paper to cause it to draw straight and true, by turning upthe set-screw G, thereby forcing the follower M against thefrictiongland 02.

rIhe operation of drawing the paper from the roll being continued, saidroll is gradually reduced in size, thereby gradually permitting thespring I) to raise the lever J, by which movement the cam I is caused torelease its pressure upon the shoulder H, causing the friction upon thefriction-gland o2 to be gradually reduced, thereby causing,automatically, a nearly uniform tension or strain upon the paper as itis drawn into the machine, until said roll is exhausted. v

I will now proceed to explain the drawing mechanism referred toheretofore.

and are about one-half of the length of saidv openings, and slightlythicker than the said gage-plate. Each pair of said feed-blocks isconnected by an elastic cord, z e', passing around the pulleys a a',respectively, said pulleys being placed in openings made in thelgage-plate for their reception, and are covered by the plate b, a partof which is seen broken off in the perspective view.

The said elastic cords z c are of such a length that, when onefeed-block has nearly completed its forward stroke, the other will be drawn back to the end of its respective opening.

Situated below the said gage-plate, and at a right angle with it, and inthe middle of the length of the said openings, is a drawingroller, WV,the circumference of which is somewhat less than the length of the saidopenings o o o 0', itslcngth extending across the said gage-plate.

Situated above the said drawing-roller W, with which it is connected bythe gear-wheels, of equal size, I U, is located a drawing-shaft, V, uponwhich is placed, corresponding with the said openings in the gage-plated, two or more collars, X X X X, of equal diameter with thedrawing-roller W, with nearly onehalf of the periphery of each removed,and are set on the drawing-shaft V in pairs, as shown in Fig. 6, one ofeach -pair being set paper to pass freely between it and the saidfeed-blocks. y

If, now, the paper, which envelops the gageplate d' in the process ofthe manufacture, be drawn forward and presented to the drawingroller Wand the collars X X X Xf, and they put in motion by the crank w and itsproper connections, it will be grasped by the said collars in each pairalternately, and drawn forward, the acting collar pressing the paper andits respective feed-block upon the lower drawing-roller W, causing aforward movement of the feed-block until its stroke is completed, whenit is released by the acting collar, and is then drawn back by theforward movement of the other feed-block of the pair operating theelastic cord connecting them. In order to insure the continuous actionof a pair of the said collars, one of said collars is caused,

by its periphery containing a little more than one-half of itscircumference, to grasp its respective feed-block just before the otherfeedblock of the pair has completed its full forward stroke, causingboth of the said feed-blocks to move forward for a short distancetogether, the said elastic cord permitting such movement by itselasticity. The requisite degree of pressure to operate the saidfeed-blocks between the said drawing-roller and the said collars may beproduced by screwing down the caps A A, or by providing sliding boxesfor the journals of the said drawing-roller W and feed-shaft V, andadjusting them by setscrews.

The construction of the pasting mechanism is substantially as foilows:

Forward of the folding-rollers g g, and raised a little above them, islocated a shaft, u, extending across-the machine. This shaft is providedwith two arms, c c, which support a pasting-roller, l, and is operatedby a lever, P', attached to one of its outer ends, said lever P beingconnected with the rods r, lever t,vby which the movement of the cam ais communicated to the pasting-roller l, bringing said pasting-roller lfrom the-paste-roller m down on to the supporting-plate f', its upwardmovement to the said paste-roller on being caused by the spring c.Situated forward of the said pasting-roller Z, and running parallel withit, is a paste-roller, m, revolving in a pan, e', for containing thepaste, and is operated by a belt, h, driven by a pulley, attached to themain shaft e and pulley z. Located on the shaft of the saidvpaste-roller m is a gear-wheel, k, working into a loose gearwheel, j,placed upon the outer end of the shaft a. Working into the saidgear-wheel j is also a gear-wheel, attached to the shaft of thepasting-roller l. 'Ihe object of placing the gear-wheel j upon the shafta is that the at l pasting-roller Z may vibrate back and forth betweenthe said paste-roller m and the supporting-plate f, and not separate ordisturb the pitch-line of the said gear-wheels i j, and

also that the said pasting-roller Z may be made to revolve continuouslywithout respect to its' position between said paste-roller m and thesupporting-plate f. AThe supportingplate f extends across the machineimmediately above the folding-roller g, and very near it, its in-` sideedge conforming nearly to the circumference of said folding-roller g, inorder that the end of the tube or bag may pass freely upon it to bepasted. i

If, now, the tube or bag, as it has passed forward from the drawingmechanism, and has been severed by appropriate means, so as to leave aprojecting lap on its under side, passes forward onto the saidsupporting-platej", (the machine being in operation,) by the actionofthe cam a, located on the main shaft e, the

pasting-roller l is brought down onto the pro- V jecting lap ot' thebag, audapplies to it the paste, the said supporting-plate f supportingthe said lap during the operation of pasting it, when it is forced bytheblade z between the folding-rollers g g", and the said lap foldedonto the bag. After applying the paste to the said lap by the action oithe cam u and spring fv, the said pastinglroller l is brought backagainst the said paste-roller m, against which it revolves iu receivingits supply of paste.

What I claim as my'invention, and desire to secure by Letters Patent, is

l. Regulating the tension or strain on the paper, as it is drawn intothe machine, in the process of making paper bags, by means of aself-adjusting compressor-bar and wheel applied thereto, substantiallyas described.

2. Drawing the paper tube forward to the cutting and pasting devices bymeans of a shaft, V,\fitted with collars, in Vcombination ,withfeed-blocks, drawn back by elastic cords,

substantially as described.

y'3l The combination of the bar C with the feed-blocks, for the purposeof keeping them in their respective places in the gage-plate,substantially as described.

4. Laying the mpaste upon the edge of the paper to be-pastiied, by meansof a revolving and Vibrating pasting-roller, operated substantially inthe 'manner described.

' JOSEPH WELLS.

Witnesses:

MAURICE LEARY, O. A.W1LcoX.

